Post war influence of youth made them a valuable consumer market
Electric guitars and how they were played
Appealed to working class
Used technology for creation of music
As many times as you want makes most sense to me but they all fit in the sentence
<span>Humans began creating images about 30,000 years ago.
Many Archeologists has found several painting on the Wall of a cave as a proof that an image as an artform has been developed from around 30,000 years ago.
The structure of the artform of course was still simple and uncomplicated ( such as a hand print from blood)Hope this helps. Let me know if you need additional help!</span>